#content{
    width: 100%;
    margin: 0 auto;
    clear: both;
    .top_nav{
            display: block;
            .top_shadow{
                overflow: hidden;
                height: 12px;
                width: 100%;
                position: absolute;
                top: 0;
                z-index:5;
                background: -o-linear-gradient(top,rgba(98,98,98,0,0"url(body.css4902)" ) 2%,rgba(255,255,255,0) 86%);
                background: -ms-linear-gradient(top,rgba(98,98,98,0,0"url(body.css4902)" ) 2%,rgba(255,255,255,0) 86%);
                background: -webkit-linear-gradient(top,rgba(98,98,98,0,0"url(body.css4902)" ) 2%,rgba(255,255,255,0) 86%);
                background: -moz-linear-gradient(top,rgba(98,98,98,0,0"url(body.css4902)" ) 2%,rgba(255,255,255,0) 86%);
            }
            .panel{overflow: visible;
                       z-index: 0;display: block;
            }
    }
    
//  .mask_layer{
//      width:200px;
//      height:470px;
//      position: absolute;
//      top:0;
//      right: 0;
//      
//      position: relative;
//      
//      z-index: 99999;
//      top: 10px;
//      right: 0;
//  
//  }
    
}
